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3 years ago

Wednesday: Solve for x (can't use decimals), must use the rules.

Mathematics

1 answer:

Tanzania [10]3 years ago

8 0

Answer:

missing angle isosceles angle and side (a)

Pythagoras theorem

a²+a²=16²

a²=256/2

a=√128=11.3=11

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Hi I need help with this, I am very confused

AlladinOne [14]

Answer:

1/81

Step-by-step explanation:

P(1st ticket is a winner) = 1/9

These are independent events

P(2nd ticket is a winner) = 1/9

P (winner, winner) = 1/9 * 1/9 = 1/81

7 0

3 years ago

Solve for X. Please!!

pychu [463]

Answer:

x = 37.5

Step-by-step explanation:

By Basic Proportionality Theorem:

$\frac{x}{20} = \frac{46 - 16}{16} \\ \\ \frac{x}{20} = \frac{30}{16} \\ \\ x = \frac{20 \times 30}{16} \\ \\ x = \frac{600}{16} \\ \\ x = 37.5$

3 0

3 years ago

Write down the exact value of cos 60 degrees

Misha Larkins [42]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

For a moving object, the force is acting on the object varies directly with the object’s acceleration. When a force of 9 N acts

svetlana [45]

Answer:

12 Newtons

Step-by-step explanation:

We can use Newton’s Second Law to find the mass first.

F = ma

9 = 3m

mass = 3

Substitute this into the second equation.

F = ma

F = 3(4)

F = 12N

Hope this helps! :D

8 0

3 years ago

Adult male heights have a normal probability distribution with a mean of 70 inches and a standard deviation of 4 inches.

nexus9112 [7]

Answer: 0.84134

Step-by-step explanation:

We need to find the z-score for the given information first since this will help us find the probability. The formula for this is

Z score = $\frac{x - \mu}{\sigma}$

We have

$x =$ 66 inches (the raw score)

$\mu =$ 70 inches (the population mean)

$\sigma$ = 4 inches (the standard deviation)

This gives

Z score = $\frac{x - \mu}{\sigma}$ = $\frac{66-70}{4} = -1$

If you use a calculator, or a Z-score table then P(x > Z) is just P(Z > -1) which gives a probability of 0.84134.

7 0

2 years ago